Gas water heater



April 21 1926.

G. o. THOMPSON GAS WATER HEATER Filed May 1 l .7 Gib/P65 O 7IIO/IPSON Patented Apr. 27, 1926.

UNITED STATES 1,582,236 PATENT OFFICE.,

GEORGE O. THOMPSON, OF GLENDALE, CALIFORNIA.

GAS WATER HEATER.

Application filed May 31, 1923. Serial No. 642,712.

1 all 107mm it may concern:

Be it known that I, GEORGE Orrs THOMP' son, a citizen of the United States, residing at Glendale, in the'county of Los Angeles and State of California, have invented new and useful Improvements in Gas ater Heaters, of which the following is a speciiication.

My present invention is agas water heater; and it is a primary object of this invention to provide a heater which may be manufactured and sold at a moderate prlce and which shall nevertheless be highly efiicient and economical 1n the heatmg of water by the combustion of a gaseous or liquid fuel.

It is a further object of this invention.

to provide a water heater which may comprise concentric shells and which shall occupy a minimum of space and shall require no extensive or difficult connections or coils.

It is a further object of this invention to provide a water heater which may be substantially circular in cross section and which shall comprise a hollow boiler so arranged as to permit thepassage of combustion or flue gases therethrough, my preferred construction being such as to comprise staggered battles extending across said cen tral flue and provided also with aligned apertures for substantially vertical pipes, which are thus effectively exposed to receive heat from said gases, the mentioned pipes being preferably connected at top and bot-- tom to suitable header castings respectively provided with outlet and inlet connections extending to said boiler. I

It is a further object of my invention to provide a gas water heater requiring no laterally connected pipes, the heating circuit comprising only the boiler itself and the mentioned parallel vertical heating pipes ex.

tending therethrough, and suitable connections, both the interior walls of the boiler proper and the mentioned parallel pipes being exposed to hot'gases and only an unavoidable minimum of heat being permitted to escape from the outside of the boiler and from the top thereof, the preferred con-' struction of my boiler being such as to permit of the connecting of a stack thereto and such that an entire set of parallel heating pipes connected to manifolds and associated with baffles may be assembled and inserted,

or removed for repair or renewal, as a unit. Other ob ects of my inventlon will appear from the following description of a preferred embodiment thereof, and from the appended claim, taken in connection with the accompanying drawings,in which Fig. l is an elevation, with parts broken away. i c

Fig. 2 is a section, which may be regarded as taken on the line 22 of Fig. 1.

Figs. 3 and 4 are respectively elevational and plan. views of a preferred novel'type of header casting, suitable for use in my invention. v

Referring in detail to the parts of that specific embodiment of my invention which I have chosen for purposes of illustration, 1 is a boiler comprising an inner shell 2 and an outer shell 3, the latter being extended at the bottom to form a skirt 4, which may be integral therewith and may be provided with supporting legs 5 and with a door 6, to permit access to parts hereinafter referred to, the shells 2 and 3 being connected at the top by an annular plate 7, provided with two openings 5 and 6, and connected at the bottom by a similar plate 7, provided with alsingle opening 8, to facilitate the connecting of heating pipes in the manner hereinafter described. I

ater may be introduced into my boiler in any suitable way, as by means of an inlet pipe 9, which may extend nearly to the bottom thereof, in a well known 'inanner;,

and, although. various alternative construc tions might obviously be employed, I prefer to provide novel circulating means comprising headers 10 and 11 which may be substantially alike and may be connected by those mentioned and suitably spaced therefrom, may be of such size as to provide a circun'iferential passage for hot gases, adjacent to the inner walls 2 of the boiler 1.

The respective headers 10 and 11 may be connected with the interior of the boiler in any suitable way; but I prefer to connect *ith a plurality, I

the lower manifold by means of a pipe l-l, which may extend vertically through a burner and may be threaded into a single central aperture in the bottom of said header, this pipe 1% being shown as connected by means comprising a union 16 in a horizontal pipe 17 with veicical pipe 18 extending into the mentioned opening 8 in the bottom of the boiler' 1, the pipe 18 being preferably provided with a downwarc extension 19 having a cocl: or taicet 20, to permit a complete withdrawal of water from the heater, when desired for purposes of cleaning, repair, or the like.

it being understood that when the burner 15 is lighted, convenient access being provided through the door (3, the heating of water in the header 10 and the pipes 12 vill promote an upward circulation therein, l facilitate this circulation by providing a single vertical pipe 21 connected with the upper face of the header and leading, by a horizontal connection preiei'toly pro vided with a union into a vertical pipe 2%, which may serve not only a cii'cul:i tion pipe, through which hot wa er may descend into the boiler 1, but a. i as l .25 and divergent branches 26, respectively provided with parallel openings 27, the cm tral body being also provided vith the mentio ied openings 13 directly n one face thereof and with a central opening 28 in the opposite iace thereof, this cent al opening serving, in the case of the lower heade to provide a means "for connecting the pipe l, and serving, in case of the upper header,

means i 1' connecting the pipe 21. in an installation of the general chara ter shown in the drawing, such an installation bein adapted to the uses oi? an ordinary a 1 J1 r 1 household, rue ballle plates aoove rererred to may be seven in nui'nber, and each batlle plate may be secured by means owl collars provided with set scre vs engaging the tubes 12, it being understood that those bailles 29 i c; L 1 7 which are provided with central apertures, should fit tightly against both the tubes 12 and the wall 2 of the boiler 1, whereas the battles 30, which have no central apertures, may be spaced a quarter of an inch or nior from the wall 2, although they may ht snugly upon the. tubes 12, my pretcrred construction being such as shal 1 1 r l cta d the rise oi combustion gases tiir-e ign the interior of my boiler and such is shall facilitate the heating thereo-y of both the tubes 12 and i of the wall 2, whereby circulation t ie \ater e water in theand also that various iiiodilications might be made therein w .10 t departure from the spirit and scope or my invention as the same above and in the following claii'i'is, the use of a stool; above the top of the boiler being optional.

The leaders 10 and 11 connected by the pipes 12 and carrying the bellies and 30, the pipe 1i connected to the header 1() and the pipe C'l connected to the header 11,

forms a heating unit which is readily inserted into the boiler and connected to the boiler by the lions 16 and 2 -3, and which readily renio. .ble from the boiler by break- 'iig the unions 16 and 23.

What I claim is:

A water heater comprising an outer shell, an inner shell disposed within the outer shell, means providing end closures between the shells, headers disposed adjacent the top and bottom of the inner shell, a plurality of straight, parallel tubes disposed vrithin said inner shell connecting said headers, a conduit having a union therein connecting the upper iieader to the space between the shells adjacent the top thereof, a conduit having a union therein connecting the lower header to the space between the shells adjacent the bottom thereof, said unions providing for removal oi the headers and pipes, means for supplying and withdrawing wa ier from the space between the she ls, a heating element disposed beneath tha lower header, there being shoulders provided upon raid pipes, and bai'ile plates resting upon said shoulders, alternate battle plates 1 aviiig their peripheral edges in spaced relation to the interior surface of said inner shell, and be intermediate battle pl ites having their peripheil edg, i

name to this specificatio i.

and having apertures therethroug i.

In testimony whereof l have signed my GEORGE O. THOMPSON. 

